IPIQ

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F16

ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL

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F16B

DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING

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43/00

Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

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F16B43/02

with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt

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F16B43/025

for surfaces not surrounding the bolt, e.g. hook adaptors for bolts

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